As an entity, the Girls, and it's not even close. The Spice Girls were, and still are, recognized for what they (or rather, their image) brought to the landscape of music at that time. They were like this well-devised idea, despite the fact that they weren't. They weren't regarded as a sensationally relevant music group. They were staples not only applicable to the music scene, or even pop culture, but in all of entertainment. They had attained as a status of being "socially relevant" and having achieved such a status in the amount of time that they did was astounding. No other name was uttered more in 1997 than the Spice Girls. Not Tupac, not Biggie, not Titanic.
Where BSB definitely manages to one-up the Girls is in longevity, which ultimately equated to them having a wider catalog of hit records. They were known more for their music, as opposed to the "Spice Girls" brand. They had the bigger records. They were the bigger music artists, in every aspect.
Though, it should be noted that the Backstreet Boys sold about as much records in four years as the Spice Girls did in one year.
This. Spice Girls is a phenomenal group even their name and faces are iconic. The nicknames, Baby, Posh, Ginger, Scary, Sporty.
They have individuality as well being known as a great group. They are more memorable and had bigger impact. Comparing their peaks is not even close. Girls win, the dolls, books, movies, and even those trademark clothes and signature costumes of each members.
Worldwide also they are bigger Asia and Europe they made that huge impact even in a short time yet remarkable.